Impact

It's possible for a user to pass a relative file path for the snapshot name and reach outside of the project directory into the machine running the test. Example:

  cy.get('h1').matchImageSnapshot('../../../ignore-relative-dirs')

The above will create an ignore-relative-dirs.png three levels up

Patches

Fixed in 8.0.2

Workarounds

Validate all the existing uses of matchImageSnapshot to ensure correct use of the filename argument. Example:

    // snapshot name will be the test title
    cy.matchImageSnapshot();

    // snapshot name will be the name passed in
    cy.matchImageSnapshot('login');

References

simonsmith/cypress-image-snapshot#15

References

• GHSA-vxjg-hchx-cc4g
• simonsmith/cypress-image-snapshot#15
• simonsmith/cypress-image-snapshot@ef49519
• https://github.com/simonsmith/cypress-image-snapshot/releases/tag/8.0.2
• https://nvd.nist.gov/vuln/detail/CVE-2023-38695